20047+4938 ES 2688 BC
20h 04m 40.11s +49° 38' 27.8" P.A. 169.00 sep 15.4 mag 10.41,15.10 Sp A2
| Coord 2000 |
20047+4938 |
|
Discov num |
ES 2688 |
|
Comp |
BC |
|
Coord arcsec 2000 |
20 04 40.11 +49 38 27.8 |
|
| Date first |
1909 |
|
Date last |
2015 |
|
Obs |
5 |
|
| Pa first |
159 |
|
Pa last |
168.8 |
|
P.A. Now (θ) |
168.8° |
|
| Sep first |
13.9 |
|
Sep last |
15.392 |
|
Sep. Now (ρ) |
15.392" |
|
| Mag pri |
10.41 |
|
Mag sec |
15.10 |
|
delta mag (ΔM) |
4.69 |
|
Spectral class |
A2 (white) |
|
| Pri motion ra |
+007 |
|
Sec motion ra |
|
|
| Pri motion dec |
-016 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
20047+4938 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
20 04 40 +49 38 31 |
KU 58 AB |
2020 |
19 |
186 |
2.7 |
10.23 |
10.41 |
0.18 |
|
|
| Show |
|
|
20 04 40 +49 38 28 |
ES 2688 BC |
2015 |
5 |
169 |
15.4 |
10.41 |
15.10 |
4.69 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3567-00721-2 |
|
Gaia DR2 |
2087754985222802048 |
|
